Merge pull request #114884 from LuigiPiucco/pressure-vessel

steam: continuation of #114024 with missing edits

nixos/modules/programs/steam.nix

@@ -17,6 +17,7 @@ in {
   config = mkIf cfg.enable {
     hardware.opengl = { # this fixes the "glXChooseVisual failed" bug, context: https://github.com/NixOS/nixpkgs/issues/47932
       enable = true;
+      driSupport = true;
       driSupport32Bit = true;
     };
 

pkgs/games/steam/fhsenv.nix

@@ -140,6 +140,7 @@ in buildFHSUserEnv rec {
 
     # dependencies for mesa drivers, needed inside pressure-vessel
     mesa.drivers
+    vulkan-loader
     expat
     wayland
     xlibs.libxcb
@@ -232,7 +233,14 @@ in buildFHSUserEnv rec {
     libvdpau
   ] ++ steamPackages.steam-runtime-wrapped.overridePkgs) ++ extraLibraries pkgs;
 
-  extraBuildCommands = if (!nativeOnly) then ''
+  extraBuildCommands = ''
+    if [ -f $out/usr/share/vulkan/icd.d/nvidia_icd.json ]; then
+      cp $out/usr/share/vulkan/icd.d/nvidia_icd{,32}.json
+      nvidia32Lib=$(realpath $out/lib32/libGLX_nvidia.so.0 | cut -d'/' -f-4)
+      escapedNvidia32Lib="''${nvidia32Lib//\//\\\/}"
+      sed -i "s/\/nix\/store\/.*\/lib\/libGLX_nvidia\.so\.0/$escapedNvidia32Lib\/lib\/libGLX_nvidia\.so\.0/g" $out/usr/share/vulkan/icd.d/nvidia_icd32.json
+    fi
+  '' + (if (!nativeOnly) then ''
     mkdir -p steamrt
     ln -s ../lib/steam-runtime steamrt/${steam-runtime-wrapped.arch}
     ${lib.optionalString (steam-runtime-wrapped-i686 != null) ''
@@ -245,7 +253,7 @@ in buildFHSUserEnv rec {
     ${lib.optionalString (steam-runtime-wrapped-i686 != null) ''
       ln -s /usr/lib32/libbz2.so usr/lib32/libbz2.so.1.0
     ''}
-  '';
+  '');
 
   extraInstallCommands = ''
     mkdir -p $out/share/applications